<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="renderer" content="webkit">
<title>抽奖</title>
<script type="text/javascript" src="./js/jquery.min.js"></script>
<style>
*{margin:0;padding:0;}
img{display:block;}
i{font-style:normal;}
.vetically{justify-content:center;align-items:center;display:-webkit-flex;}
.prize_con{position: absolute;width: 100%;height: 100%;background: url(images/firstp_bg.jpg) no-repeat left top / 100% 100%;overflow: hidden;}
.prize_grade{font-size:98px;color: #ffe9af;text-align: center;margin: 160px auto 0;}
.prize_list{width:55%;height:350px;margin: 20px auto 55px;text-align: center;overflow: hidden;}
.prize_list ul{width:100%;font-size:0;}
.prize_list li{display:inline-block;font-size:45px;color:#f1bf90;text-align: center;width:20%;line-height:100px;font-family:Arial;}
.start{width: 250px;height: 90px;margin:0 auto;cursor:pointer;}
.prize_set{position: absolute;right: 60px;bottom: 40px;font-size: 16px;color: #f7f3e8;line-height: 30px;}
.prize_set li{display: inline-block;margin-left: 20px;}
.set_grade select,.set_people input, .set_money input{background: #fff;width:110px;height:36px;border:1px solid #8f0000;margin-left: .1rem;color: #000;padding-left:10px;}
</style>
</head>
<body>
<div class="wrap">
  <div class="prize_con">
      <p class="prize_grade"><span>开始抽奖</span> <i>0</i>元</p>
        <div class="prize_list vetically">
          <ul>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
			<li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
			<li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li> 
          </ul>
        </div>
      <p class="start"><img src="images/prize_start.png" alt=""></p>
      <ul class="prize_set">
          <li class="set_grade">奖等
            <select id="set_grade">
              <option>选择奖等</option>
              <option>特等奖</option>
              <option>一等奖</option>
              <option>二等奖</option>
              <option>三等奖</option>
            </select>
          </li>
          <li class="set_people">人数<input type="tel" placeholder="输入中奖人数" id="prizeCount"></li>
          <li class="set_money">金额<input type="tel" placeholder="输入中奖金额" id="prizeMoney"></li>
      </ul>
  </div>
</div>
<input type="hidden" value="0" id="prize_btn">
<script>
  var test = window.location.hostname;//127.0.0.1
  var port = window.location.port;
  var test1 = window.location.pathname;//online/....
  WEB_PATH = test + ":" + port + test1;
  var myNumber;
  var arr = [];
  var code = [];

  /*随机所有的code并且不重复*/
  function showRandomNum(num) {
    var li = "";
    for(var i = 0; i < code.length; i++){
      arr[i] = i;
    }
    arr.sort(function(){
      return 0.5 - Math.random();
    });

    for(var i = 0; i < num; i++){
      var index = arr[i];
      li += '<li>'+code[index]+'</li>';
    }

    $(".prize_list ul").html(li);
  }

  $(function () {
    $(".start").click(function(){
      if($("#prize_btn").val() == 0){        
        if($("#set_grade").val() == "选择奖等") {
            alert("请选择奖等");
            return;
        }else if($("#prizeCount").val() == "") {
            alert("请输入中奖人数");
            return;
        }else if($("#prizeCount").val() > 30) {
            alert("单次抽奖人数不能超过10人");
            return;
        }else if($("#prizeMoney").val() == "") {
            alert("请输入中奖金额");
            return;
        }else{
          $("#prize_btn").val(1);
          var num = $("#prizeCount").val();
          $(this).find("img").attr("src","images/prize_stop.png");

          myNumber = setInterval(function(){
            showRandomNum(num);
          }, 30);
        }        
      }else{
        $("#prize_btn").val(0);
        clearInterval(myNumber);
        $(this).find("img").attr("src","images/prize_start.png");
      }
      codenum=new Array;
      $.ajax({
        type: "post",
        url: "person.php",
        async: true,
        dataType: "json",
        success: function (jdata) {
         // console.log(jdata);
          var count=jdata.length;
          for(var i=0;i<count;i++) {
            codenum.push(jdata[i]);
          }
          code=codenum;
        }
      });
    });

    //回车键控制开始和停止
    $(document).keydown(function (event) {
        var e = event || window.event || arguments.callee.caller.arguments[0];
        if (e && e.keyCode == 13) { // enter 键
            $(".start").click();
        }
    });

    $("#set_grade").change(function(){
      $(".prize_grade span").text($(this).val());
    });

    $("#prizeMoney").keyup(function(){
      $(".prize_grade i").text($(this).val());
    });
}); 
</script>
</body>
</html>